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INA592: using INA592 for making a HOWLAND PUMP

Part Number: INA592
Other Parts Discussed in Thread: OPA593

Dear members,

I need to make a part of my design to be a HOWLAND PUMP for driving up to 100mA. Doing the simulations I could have maximum 60mA of load. I know that the MAx output current of this chip is 65mA. I tried to simulate what is mentiones in the document "Analysis of improved Howland current Pump" design Number 4. The simulation in Pspice is not working. I need to make sure of my circuit. 

I appreciate any kind of help.

Resistance values are not calculated. 

I tried to do the simulation in LTSpice as well. 

with the values on this circuit if gives around 33mA.